What is the mole fraction of oxygen gas in air

Explain the relationship between forward and reverse reactions at equilibrium

Why does pulse and breathing rate change when you exercise

True or False? Not all compounds will dissolve in water.

Which one of the following series of lines in the hydrogen spectrum arises from transitions down to n = 2? A) 121, 102, 97, 95 nm B) 655, 485, 433, 409 nm C) 1872, 1279, 1092, 1003 nm D) 4044, 2620, 2162, 1941 nm

Why do the names of some ionic compounds include the charge of the metal ion while others do not?

Balance the following redox equation in acidic solution using the smallest integers possible and select the correct coefficient for the H + (aq) ion.

Toussaint L' ouveeture lead a revolt that eventually resulted in Independence for

If a solution contains 1 x 106 hb molecules, how many o2 binding sites are available? if the solution of hb is 50% saturated with o2, how many binding sites are occupied by o2?

A. what are isotopes? b. how are the isotopes of a particular element alike? c. how are they different?

The line of longitude used as the origin in a system of coordinates